Combine the lettuce, garbanzo beans, and corn (drain and rinse first!) in a large salad bowl. Add in approximately 1c walnuts and 1c Craisins (use more or less to taste). Grate or shred the Reggiano and add it in as well. In a separate bowl whisk together the olive oil and the juice from 1/3 of the lemon. Drizzle the dressing over the salad and mix well. Serves two to three people as a meal; serves more people for an appetizer. Enjoy!